Review on Hagen Marina Slim Aquarium Water Filter: 15-Pack with Carbon Plus Ceramic Cartridge - Top-Grade Filtration for Crisp, Clear Water! by Jennifer Wilson

I ordered these with the Marina Hagen 360 degree 2.65 gallon desktop aquarium kit but they are only slightly larger than the cartridges that came with them. with tank. I'm not sure if I ordered the wrong ones or if they are slightly different. They seem to work but I don't think they should come with my tank. If you have a 2.65 gallon Marina Hagen 360 Desktop Aquarium Kit, you may want to try Hagen's other fine filter.